Mechanical and Thermal Properties of HDPE/ Wood Flour Nanocomposite

The effect of both nanoclay (Cloisite 30B) and antioxidant (Irganox B225) on select mechanical and thermal properties of high density polyethylene (HDPE)/wood flour composites were investigated. Nine compounds were prepared using a twin-screw extruder. Tensile strength of compounds containing 2.5 and 5.0 parts per hundred composite (phc) nanoclay increased by 24% compared to samples without nanoclay. Tensile modulus of nanocomposites increased by 7.3% by addition of 2.5 phc nanoclay; however, further loading of nanoclay to 5 phc decreased the tensile modulus by 4.3%. The Halpin–Tsai equation predicted the stack number of nanoclay between two and three for the nanocomposite containing 2.5 phc nanoclay which confirmed intercalated structure formation. Addition of antioxidant had a negligible effect on tensile properties of the compounds. Oxidative induction time (OIT) of composites decreased with the addition of nanoclay (2.5 to 5.0 phc) and increased significantly (over 200%) with addition of 0.4 phc antioxidant

کلیدواژه ها:

Nanocomposite ، Tensile properties ، Oxidative Induction Time ، Cloisite 30B ، Irganox B225